20011744 Ver 1_Monitoring Plan_20080520

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Project ID & Status
Project Name/Number: Lyle Creek
EEPID: 423
Coun : Catawba
Project Type: Stream Restoration
Current Status: 5 Years of Monitoring complete
Project Setting & Background
Project Timeline
Basin: Catawba
Physiographic Region: Piedmont
Drainage Area: 0.47
Impervious cover <10%
USGS Hydro Unit: 03050101
NCDWQ Subbasin_ 03-08-32
Thermal Regime: Warm
Trout Water: No
Designer: Ecoscience
Milestone Date
Construction Completed 2002
As-built survey 2002
Monitoring Year-1 Nov 2003
Monitoring Year-2 July 2004
Monitoring Year-3 Dec 2005
Monitoring Year-4 Sept 2006
Monitoring Year-5 Sept 2007
Project Assets

Segment/Reach 1lutigation
Approach Linear Stationing
Comments
Type Feet ft
Reach 1
R
e to Lyle R P2 934 0-00_9-30 Channel restoration. in-place with use of grade
Creek control and bank protection structures-
Reach 2
to Lyle R Pi 137
1 9-30-20+6? Channel restoration, relocation with use of grade

Creek , control and bank protection structures-
I UT to Lyle
800
NY A
NY
Area included in conservation easement.
Creek
r *11-r- I
&0Q131VQtem
PROGRAM
The project is being proposed for closeout and encompasses with 2,067 feet of stream at ratio of 1:1 yielding 2,067 stream
mitigation units.
Page 1 of 16 Lyle Creek (423) Closeout Summary
Project Background and Summary
The Lyle Creek Mitigation Site was developed by the NC DENR WRP/EEP and constructed in 2002. It is located in Catawba County and consists of 2,067 linear feet of
restoration across 2 design reaches that included planting of the riparian buffer and protection of mature vegetation. The project also includes a tributary near the bot-
tom of the project captured in the conservation easement. The upper reach (reach 1) was an incised G/F type stream and was restored in place through installation of a
bankfull bench to improve the Bank height and entrenchment ratios (Figure 2). The lower reach (reach 2) was a severally incised G stream with bank height ratios rang-
ing from 2.3-2.6, built off-line in its historical valley location restoring its pattern dimension and profile and re-attaching the bankfull discharge to the relict floodplain.
Goals and Objectives
1. Restore 2,067 feet of an unnamed tributary (UT) to Lyle Creek.
2. Enhance the riparian area by planting native species.
3. Exclude cattle access to the UT to Lyle Creek and 800 linear feet of a secondary unnamed tributary.
Success Criteria
Morphological
Hydrological
Vegetation
-Maintenance of a C/E stream type
-Modest change in W/D ratio
-Maintenance of a W/D ratio < 15
-Bank height ratios <1.4
-Max depths less than 3
-Entrenchment ratios >2.2
-Maintenance of overall lateral and vertical stability
(<0.5 foot in bed or bank movement per year)
-Maintenance of pattern (absence of chute cutoffs)
-2 bankfull events
- 260 stems/acre target community
Page 2 of 16 Lyle Creek (423) Closeout Summary
Project Vicinity Map

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Jutdion Figure, 1. Pruivel [.txcalitnr atki WawnhedMa1L
[.tide Cru k Stream Restoration Pn c 14 #_ D
JmaRS R
I x; r,tr ? Goulding Catawba Couto% NC March 2q)07
Monitori uz R. xrr[ Year J. o 5
To access site from RT 40, take exit 138 and turn south unto Wyke
Road. Turn right onto Stagecoach Road. Continue on Stagecoach for
about 1 mile at which point the road will cross UT to Lyle Creek. The res-
toration project is located about 1,000 feet downstream from Stagecoach
Road.
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Page 4 of 16 Lyle Creek (423) Closeout Summary
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AF-ROXINA.TE
X-SECTION-1
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GR IHC SCALE
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GENERAL SITE DATA aRO'vl]ED BY NCEEF. CATAY*A COUNTY ?ORDAN LYLE CREEK STREAM RE•STnRaT17N 5%
A%LE
2 ALL LOCATIMS ARE AP?eQXINATE NORTH c.4ROU 1 ]ONES .? N : 03MC-00•
Ll MCNITCRING F4:I,?E 12
YEA;( ; or !) GDULDING MLNITCRING FLAN MEW MA-' FICiRE OF
Page 5 of 16 Lyle Creek (423) Closeout Summary
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NOTES
.,ENERAL 511E DATA nRO'v17© BY NCEEP.
HAIh73 111 2 ALL LOCATUriS ARE APDR01cIMATE
FRC•JECT N•7 42.`.
CAiA,vEA L'CUNTY
NORTH ZZAROUNA
MCNITCRING
YEAS Sot
]ONES
]ONES &
GOULDING
1(-:?"110N-6
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W E: SrST?v EF4HA%fDIENT PROC4RAM
YLE CREEK STREAM RESTORATIO
FIG(.RE 1.2
MONIT)CRING FLAN VIEW MA'
NOtEVMR 2CDr
NO: 0.5,-AC-OD'
RE 2,iF S
Page 6 of 16 Lyle Creek (423) Closeout Summary

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NOTES
' PR:^JECT N.^. 4'..'.
CATA*?A COUNTY
JORDAN NC U SYt TD+ EnHA%CEWD+T PROWPM
LYLE CREEK STREAM RESTORATION DATE • N?aE4-MR 2007
WF T--4r'
. GENERAL SITE DATA ?ROVIJED BY NCEER.

E'? ALL LOCATIO%S ARE AP?ROXINATE NORTH CAROLIN t ]ONES

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Page 7 of 16 Lyle Creek (423) Closeout Summary
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Morphological Stability
The data were collected by 4 different monitoring performers spanning the As-built phase through Year-5 and the collection of these data were hampered by the abil-
ity of one performer to locate some of the prior performers monuments for cross-sections. In addition, methods for survey evolved and changed over the monitoring
period and it was determined that different performer's used different methods such as sight and laser levels with tapes or total station, which uses a fixed longitudinal
stationing. In any case these factors undoubtedly introduced variability into the morphological overlays. Some channel adjustment did occur, but monumenting and
methodological factors definitely had some impact on the data presentation. Cross-sections 1, 4 and 7 had to be reset when a new monitoring firm was introduced in
late 2005 to complete 2006 and 2007. The amount is hard to state with certainty, but in the case of cross-sections, it appeared to be more of an issue of the cross-
sectional aperture shifting in the XY space, while with the longitudinal profile it appeared to be stationing issues from differences between the sight/laser level and to-
tal station survey methods. The methodological policies were put in place within the last 2 years to minimize this for future projects, but some of these earlier projects
were impacted by these factors to a larger extent than others. Additional variability was introduced by bankfull calls being made in the field each year as opposed to
establishing a fixed bankfull datum from which all calculations were to be derived. However, the dimensional morphological measurements for riffles were re-
examined for each year with a fixed bankfull datum and the variables (e.g. max depths and width, area) were recalculated.
Dimension
Upper Reach
The projects dimension exhibited some localized instability through the course of the monitoring period. The riffle cross-section (cross-section 2) for the upper reach
exhibited some widening and an aerial increase after construction, however this one cross-section was not representative and was placed in a short riffle just down-
stream and within the influence of a large crossvane. This was placed way down in the glide essentially in the riffle and in 2003-2005 this riffle appeared to undergo
deepening and widening typical of a pool downstream of a structure. This practice is not longer typical in designs today. The data from 2007 indicates a stabilizing
trend in the form of narrowing of the cross-section below the top of bank. The upper reach was also subjected to sands and fine material from the watershed and
banks above the project. During some points in the monitoring period there was aggradation in the features that was evident, but the majority of these features
(96%) were described as sufficiently deep in 2006 and 2007.
Lower Reach.
The lower reach was subjected to more stress than the upper reach in that there was more bank erosion, especially the lower 200 feet. The highly sinuous nature of
this reach and the valley slope applied pressure on this reach, which exhibited some longitudinal bed migration, where riffles were being pushed downstream and the
meander below would experience some erosion (N 16% of the reach), but this appears to have slowed and arrested. The riffles in this reach exhibited some widening
in 2004 ad 2005, but have exhibited narrowing below the top of bank in 2006 and 2007with the advancement of vegetation (See Figure below). This reach was also
subjected to a headcut, which brought the channel bed down -0.5 feet. These areas of instability have not changed appreciably in the last 3 years and it is believed
that the mature trees that were maintained on the site and incorporated into design, where possible have achieved an equilibrium with the tight curvatures and the
tighter E channel cross-section.
Page 10 of 16 Lyle Creek (423) Closeout Summary
Lyle Creek
Cross-Section 5-Riffle
806
805 c
y 801
d 1
u? 803.
1 I?
I
902
801
5 10 15 20 25 30 35 40 45
t-on
-W Buih-2002 -2003 7004 -20.5 -2006 - -2007 -Wet.9mfiu ?Bu0iu0
Lyle Creek
Cross-Section 3-Pool
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13

112 -
11 --

10 -

09-
S t0 t5 20 25 30 35 40
S.fiao(fl)
A, Built-2002 2003 2004-2005----2006--2007-W.. S.N. -Brlfull
Lyle Creek
Cross-Section 6-Pool
806 -
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904 -
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8
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\
\
902
901
10 15 20 25 30 35 40 45 so
sm?(a)
-A B ilt-2002 -2003 2004 -2005 -2006 -2007 -W.taS f+ce -Bdfml
Lyle Creek
Cross-Section 4-Riffle

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02
BI
10 IS 20 25 30
s.ti.. (B)
Built-2002 2003 2004 -2005 ---2006 - -2007 -
Lyle Creek
Cross-Section 7-Pool
800
903
? Pte/
802 -
801 ---- / - --
9aa
0 S 10 15 20 25 30 35 40
s.- (n3
-KBuiB-2003 2004-2005--21106--2007-Wn.BuA'sa-BunkNll
'age 11 of 16 Lyle Creek (423) Closeout Summary
Profile
The aforementioned methodological differences prompted the monitoring consultant to utilize data from 2004 and 2007 to describe the stability of the projects profile.
These two years utilized a total station with a fixed CAD stationing (see Figure) that permitted consistent comparison. The profile over this time period has generally
maintained distinctiveness of the bed, with the exception of the top 100 feet, which is the transition point for the fine material that is entering the reach from the wa-
tershed above. Approximately 97% of the pools and 75% of the riffles have maintained their respective forms based on the 2007 visual assessment. The profile over
this period has exhibited no systemic changes in elevation. However, there was a small headcut in the lower reach, and some of the aforementioned bed feature mi-
gration, which has since arrested.
995
999

98 994

w 9
997
A - -
-
993
A A
• A -
a A ? 992
996 . A A 991 - -----
995
ta
990
994 - - - - - 989 A
0
-A
993 - - 988

w 992 - - w 987 - -- -
991 - - - - 986 -
985
990
0 100 200 300 400 500 600 700 700 800 900 1000 1100 1200
Station (ft) Station (ft)
TW-2004 TW-2007 - - - - - - - WS-2007 ¦ 2007-CV 1 BKF-2007 Cross-Sec K TW-2004 TW-2007 - - - - - - - WS-2007 ¦ 2007-CV BKF-2007

Page 12 of 16 Lyle Creek (423) Closeout Summary
990

989

988 A
A
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?8 987 -
A ?A
is 986 k
985 -
984 -- -
° 983 ?t -- --..,-
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982 - - -
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980 - - -
979

1200 1300 1400 1500 1600 1700 1800 1900
Station (ft)
- TW-2004 TW-2007 - - - - - - WS-2007 ¦ 2007-CV A BKF-2007

Substrate
While there is coarse material in the channel, the pebble counts conducted at the projects cross-sections indicates that fine material entering the system has pre-
vented further coarsening. It is possible with the re-narrowing of the channel that shear will increase in these cross-sections and maintain a coarser substrate distribu-
tion in the future. Interestingly, up until the drought peak in 2007, the benthos improved steadily, indicating the substrate and the habitat may have been in sufficient
abundance and distribution to support a healthier benthic community (see benthos discussion below).
Structures
Many of the 17 structures on the site were documented by the monitoring performer as having some form of back arm scour or minor piping. Most of these in EEPs
estimation were so minor that they did not warrant cataloging. Refined criteria and guidance are being developed to further standardize the visual observations that
are performed in the field to provide greater consistency and limit false positive and false negatives in these assessments. However, there were some serious struc-
tural issues at the bottom of the project, where the bottom most crossvane was completely cut around and collapsed. The structures above these were described as
stressed, but holding grade.
Instream Biological Assessments of the Benthos
The site was monitored by David Penrose of DWQ and NCSU from 2001 through 2007 to assess the macrobenthic invertebrate community. The data indicated that
the community at the sampling location within the restored area was recovering steadily since construction and had achieved levels approaching the upstream refer-
ence location. In 2007 most metrics for both sites indicated decreases. This was thought to be a result of the very low base flows in relation to the drought.
UT Lyle Cr. #1, Reference UT Lyle Cr. #2, Restored
Metric/Date 12/01 12103 12/04 12105 12/06 12/07 12/01 12/03 12/04 12105 12/06 12/07
Total Taxa Richness 44 45 30 40 42 23 51 30 32 36 39 23
EPT Taxa Richness 16 22 14 21 21 12 17 9 14 15 17 10
EPT Abundance 94 114 71 104 97 63 84 33 51 79 72 25
Dominant in Common
Index (%)* - _ - - - - 72% 34% 50% 48% 58% 36%
# Indicator Taxa 10 10 12 14 16 9 7 4 8 6 14 5
Page 13 of 16 Lyle Creek (423) Closeout Summary
Dominant in Common values for LIT Lyle Creek (alike Property)
80 -
70 F. o Station 2
0
E 50
3 40 --
c 30 -
E 20
8 10 77
2001 2003 2004 2005 2006 2007
Year (December surveys)
Summary of Stream Data
The site has experienced some stressors due to the sinuous nature of the channel, especially in the steeper and more confined valley in the lower reach, but the data
indicate that these adjustments have mostly stabilized and there are indications in the dimensional data that the channel is narrowing up below the bankfull elevation
and possibly building an inner berm. These areas of instability seem to have reached an equilibrium with the surrounding vegetation. The site experienced multiple
bankfull events. One event was recorded via crest gauge in both 2006 and 2007. The crest gauge was installed in 2005, but the site was exposed to other events
during the monitoring period as noted by alluvium and wrack on prior visits, including the remnants of hurricanes Ivan and Frances in Fall 2004.
The project met most of the specific morphological success criteria in the approved mitigation plan cited on page 2. All of the morphological success criteria were met
with the exception of the requirement that the substrates D50 exceed 2 mm and some instances of lateral migration. This is believed to be the result of upstream
fines imported to the system even under low flow conditions. As the channel continues to narrow it should produce a more effective removal of fines.
The lateral migration of some meander bends, especially in the earlier part of monitoring period were greater than the criteria allowed as well, but the site appears to
have reached equilibrium with the large vegetation that was accommodated in the design. The vane structure at the bottom of the project has exhibited complete fail-
ure, but those above it are mainlining grade. All of the other morphological and hydrologic criteria were met and therefore the project is proposed for closeout at this
time.
Page 14 of 16 Lyle Creek (423) Closeout Summary
2008 Lyle Creek Vegetation Data
Summary
The data in table 1 suggests substantial mortality of planted stems has occurred in
years 1-4. However, after evaluating the site and reviewing the 3 different moni-
toring approaches that were applied during years 1-4, EEP believes the data is in-
consistent and does not reflect the actual condition of the woody vegetation within
the easement. The data in table 2 more accurately characterizes the current condi-
tion of the buffer with an average planted stem density of 549.2 stems per acre in
year 6. Moreover, table 2 indicates no mortality occurred between years 5 and 6,
and the vigor was determined to be predominantly excellent (74%) in year 6 with
the most dominant of 24 species being Betula nigra.
Table 2
Table 1
Stem Counts Per Acre B Plot
Plots
MY CY Ave 1 2 3 4
Y1 2002 630.0 Transects (8'x600') (0.11 acre 10%)
Y2 2003 70.0 0 40 240 0 NCSU Quads
Y3 2004 70.0 0 40 240 0 NCSU Quads
Y3 2004 607.0 1174, 243 405 2002 Plots Established by Designer (3)
Y4 2005 404.7 567 243 405 2002 Plots Established by Designer (3)
Y5 2006 See Ta ble 2 CVS- EEP Protocol Project Summary
Y6 2007 See Table 2 CVS-EEP Protocol Project Summary
Project/Status RequirmentslApproach Living Stems Species Vigor
Planted
& Most Dominant
Natural Planted Species
Total Excl. Live (most stems per
Sam lin Dates Live All planted Stake ro'ect 4 3 2 1 0
unlike
req'd per diff to per diff to Species % of to surv
name year stems plots Start End per acre acre req mortality acre req # Name stems excel good weak year dead miss unkn other
Lyle Creek 4 288 7 09127106 09128106 2220.0 549.2 229.2 0.0% 549.2 229.2 23 Betula nigra 33.1% 25% 49% 20% 5%
Lyle Creek 5 260 7 09124107 09/25707 1948.3 549.2 229.2 0.0% 549.2 229.2 24 Betula nigra 36.8% 74% 8% 13% 1% 4%
Page 15 of 16 Lyle Creek (423) Closeout Summary
Vegetation Plot Photos
Y '

rte` ,,?a. NIcmitming Plut 4

k ; r.
aft ?

Motor were taken durin4 the vegetation
.'assessment ('onducted September 27-2K.
'I I%D6
Page 16 of 16 Lyle Creek (423) Closeout Summary
3. Monitoring Plot 3
2. Monitoring Plot 2
1. Monitoring Plot 1
h. Monitoring Plot 6
5. Monitoring Plot a
7. 'Monitoring Plot 7
Summary of Stream Data
The site has experienced some stressors due to the sinuous nature of the channel, especially in the steeper and more confined valley in the lower reach, but the data
indicate that these adjustments have mostly stabilized and there are indications in the dimensional data that the channel is narrowing up below the bankfull elevation
and possibly building an inner berm. These areas of instability seem to have reached an equilibrium with the surrounding vegetation. The site experienced multiple
bankfull events. One event was recorded via crest gauge in both 2006 and 2007. The crest gauge was installed in 2005, but the site was exposed to other events
during the monitoring period as noted by alluvium and wrack on prior visits, including the remnants of hurricanes Ivan and Frances in Fall 2004.
The project met most of the specific morphological success criteria in the approved mitigation plan cited on page 2. All of the morphological success criteria were met
with the exception of the requirement that the substrates D50 exceed 2 mm and some instances of lateral migration. This is believed to be the result of upstream
fines imported to the system even under low flow conditions. As the channel continues to narrow it should produce a more effective removal of fines.
The lateral migration of some meander bends, especially in the earlier part of monitoring period were greater than the criteria allowed as well, but the site appears to
have reached equilibrium with the large vegetation that was accommodated in the design. The vane structure at the bottom of the project has exhibited complete fail-
ure, but those above it are mainlining grade. All of the other morphological and hydrologic criteria were met and therefore the project is proposed for closeout at this
time.
Page 14 of 16 Lyle Creek (423) Closeout Summary